Examlex
Which of the following does not represent a category of angel investors?
Nitrogen
A chemical element with symbol N and atomic number 7, essential for all living organisms as it is a key component of amino acids and nucleic acids.
Electrons
Particles within atoms that carry a negative electrical charge and serve as the main conductors of electrical current in solids.
Covalent Bonds
A type of chemical bond involving the sharing of electron pairs between atoms, which results in a stable balance of attractive and repulsive forces between atoms.
Atom
The basic unit of a chemical element, consisting of a nucleus of protons and neutrons, with electrons orbiting around it.
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